Tank



G. T. HORTON- TANK June 11; 1935.

Filed 001?. 5, 1933 3 Sheets-Sheet 1 June 11, 1935.

TANK

G. T. HORTON Filed Oct. 5, 1933 3 Sheets-Sheet 2 .June 11, 1935. e. T. HORTON 2,004,113

' TANK v v Filed 001:. 5, 1935 5 Sheets-Sheet I5 five 0 5602" em/"7677,

, 50 outwardly so that there will be imposed upon the Patented June 11, 1935 UNITED STATES PATENT OFFICE TANK 1 George T. Horton, Chicago, Ill. Application October 5, 1933, Serial No. 692,336

3 Claims. (Cl. 220-1) This invention relates to improvementsin high The sections of the heads do not extend to an and low pressure tanks, and vacuum tanks, and, extreme point at their inner ends but are cut off more especially, to sheet metal tanks. My invento permit'the insertion in the center of a. central tion is applicable, for example, for use in convertical pipe member I3 provided with the upper nection with such tanks for the storage of volatile enlarged end It and the lower enlargedend I3 5 oils where it is necessary or desirable to maintain The ends of\this member are closed by the upper a certain amount of vapor pressure inside of the curved cap member I3 and the lower c'urved cap tank in order to reduce losses of evaporation. member lit and the same is provided with holes By the use of my invention there is effected l3 and l3 at its upper and lower ends, respec- 1 a marked saving .in' material, labor and space. tively, so that the interior of the same will be My invention permits the use of relatively thin in communication with the interior of'the tank. sheet metal in the heads of the tank, since each In this way the entire central pipe member with section is. curved so that most of Jthe stress will its enlarged ends'is utilized for storage and, conbe a tensional one. sequently, the capacity of the entire tank is not Another feature ofthis inventionis the prodiminished by the insertion of this pipe member. 15

vision of means to enable the support of the'tank The tank is provided with bracing members in upon a sand foundation. r the form of tension members between the heads, Other features and advantages of my invention said tension members being fastened to the will appear more fully as I proceed with "my heads substantially at the junction of the conical specification.

In that form of device embodying the features take the form' of angle irons l4 having their of my invention shown in the accompanying upper ends connected'to the radial I-beams l5"- d w s-- which 'are'connected to the upper head along the Figure 1 is a view in side elevation with a porjunction lines between the adjacent sectors theretion of the shell being broken away; Fig. 2 is a of on the inside of the tank. The lower ends of view partly in plan and partly in horizontal secthe members H are similarly joined to I-beams l5 tiOn; 3 is a VieW taken sisndicated by the fastened to the inside of the lower head.

line3 o g- 4 is a V w taken a nd cated The upper edge of the cylindrical shell is here y the line 4 of 3; and Fig. 5 is a'view taken shown as scalloped, as indicated by I0, to conas indicated y the line 5 0f F form to the curvature of the upper head sections 30 As hown i t d aw s, the p ssur tank II; and the troughs formed on top of the roof i cludes a shell n, here shown as cylindrical and between the junctions of the upper head sections placed in a vertical position so that the two heads may be sloped to drain outwardly. may be referred to as upper and lowerheads. The 10wer edge of t cylindrical 1 11 as sections. As here shown, these tension members 20 at These heads in general are The shell dicated by la is left straight and its extreme need not be Perfectly t y Cylindrical but, lower edge lies below the lowest point of any of for p a e scallopedas shownin United the sections l2. By this construction,- the de- Stetes Patents 1,663,179; 1,364,759; and pending edge Ill of the shell forms a skirt around 1 4,93 The heads of the tank are here the lower head. This skirt is utilized to assist 40 shown as formed of radially arranged Sectorin holding sand 50 or similar material under the 40 shaped Sheet metal sections- As here shOwni these tank'which serves as a foundation for the same. sections are curved orconvexed outwardly being For example, the sandill is graded to substantially .substa'ntiany conical sections or'segments a conform to the sectors I2, l2 of the lower head. cone formed by making sectional cuts through The tank is then built upon this sand and the the apex and P a g z i skirt ill at the lower edge of the shell prevents ever, that conical sections nee no emp oye escape of the Sand outward1y For example, the sections could be sections of a While I have Shown and described certain cylinder instead of sections of a cone. The parb odlments of my invention, it is to be understood ticular feature is to curve or convex the same that it is Capable of any odifications.

r Changes, therefore, in the construct1on and ii iig ii fiir fifire fififih 2mi nio i z i a d iai The arrangement, m be a wit out departme sections forming the upper head are indicated from spirit and ep i e l yentlen as ,by ll, H and those forming the lower head are disclosed in the appended clalms,l n which it is my indicated by l2,l2. intention to claim all novelty inherent in my 55 invention as broadly as permissible, in view of the prior art.

What I regard as new, and desire to secure by Letters Patent, is:

1. A sheet metal tank including a substantially cylindrical shell with a generally fiat lower head formed of radially arranged sector-shaped sheet metal sections, said sections being circumferentially convexed, whereby the differences in pressure between the inside and the outside of the tank will impose tensional stresses on said sections, the lower edge of said shell extending substantially below the lowest point of the sections in the lower head to serve as a retaining wall for the foundation under the tank between the lower portions of the sections.

2. A sheet metal tank including a substantially cylindrical shell with generally flat heads formed of radially arranged sector-shaped sheet metal sections, said sections being circumferentially convexed, whereby the differences in pressure between the inside and the outside of the tank will impose tensional stresses on said sections, and a central pipe with closed ends joining the heads, said pipe being provided with apertures to afford communication between its interior and the interior of the tank.

3. A tank as claimed in claim 2, with bracing members between the heads, said bracing members being fastened to the heads substantially at the junction of the sector-shaped sections.

GEORGE T. HORTON. 

